# gpt-4o — AI model deprecation and retirement dates by provider

For gpt-4o, provider is Microsoft Azure / Foundry; lifecycle status is Deprecated; shutdown / retirement date is 2026-10-01; recommended replacement is gpt-5.1; platform / deployment scope is Azure / Microsoft Foundry, recorded from its source on 2026-08-12.

- **Provider:** Microsoft Azure / Foundry
- **Model ID / API name:** gpt-4o _(verified: appears in the quote below)_
- **Human-readable model name:** gpt-4o _(verified: appears in the quote below)_
- **Lifecycle status:** Deprecated _(verified: appears in the quote below)_
- **Shutdown / retirement date:** 2026-10-01 _(verified: appears in the quote below)_
- **Recommended replacement:** gpt-5.1 _(verified: appears in the quote below)_
- **Platform / deployment scope:** Azure / Microsoft Foundry _(our reading, not quoted from the source)_

## What the source says

> gpt-4o | 2024-05-13 | Deprecated | 2026-10-01 | gpt-5.1 |

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### Shutdown / retirement date

learn.microsoft.com says shutdown / retirement date is **2026-10-01**, as of 2026-08-12.

> gpt-4o | 2024-05-13 | Deprecated | 2026-10-01 | gpt-5.1 |

Source: https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule

learn.microsoft.com says shutdown / retirement date is **2027-04-14**, as of 2026-08-12.

> 2027-04-14 | — | gpt-4.1-nano | 2025-04-14 | Deprecated | 2026-10-14 | — | gpt-4o | 2024-05-13 | Deprecated | 2026-10-01 | gpt-5.1 |

Source: https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule

learn.microsoft.com says shutdown / retirement date is **2027-04-14**, as of 2026-08-12.

> 2027-04-14 | — | gpt-4.1-nano | 2025-04-14 | Deprecated | 2026-10-14 | — | gpt-4o | 2024-05-13 | Deprecated | 2026-10-01 | gpt-5.1 |

Source: https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule


## Source

- https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule

Last verified: 2026-08-12. Review by: 2026-09-11.
Part of [AI model deprecation and retirement dates by provider](https://referencesource.org/ai-model-deprecation-and-retirement/).